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        <h1><font><font>Spatial Frequency Filtering by 2D-FFT</font></font></h1>
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        <label><font><font>Filter Type: </font></font></label>                  
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          <input type="radio" id="HPF" name="filter" value="HPF" checked="checked" class="ui-helper-hidden-accessible">
          <label for="HPF" class="ui-button ui-widget ui-state-default ui-button-text-only ui-corner-left ui-state-active" aria-pressed="true" role="button" aria-disabled="false"><span class="ui-button-text"><font><font class="">Highpass</font></font></span></label>
          <input type="radio" id="LPF" name="filter" value="LPF" class="ui-helper-hidden-accessible">
          <label for="LPF" aria-pressed="false" class="ui-button ui-widget ui-state-default ui-button-text-only ui-corner-right" role="button" aria-disabled="false"><span class="ui-button-text"><font><font class="">Lowpass</font></font></span></label>
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        <label><font><font>The filter radius: </font></font></label>
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          <label><font><font>Spectrum on logarithmic display</font></font></label>
          <input type="radio" name="view" value="0" checked="checked">
          <label><font><font>off</font></font></label>
          <input type="radio" name="view" value="1">
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        <p><font><font>To apply the (high pass / low pass filter) spatial frequency filter (2D-FFT) two-dimensional discrete Fourier transform. </font></font><br><font><font>
          IE9.0, Firefox8.0, Chrome16.0, Safari5.0, Tested Opera11.60.</font></font></p>
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